Mommas boy issues

My mother in law is always all over my husbands nuts. She hugs him like a little baby, kisses him, slaps him in the ass, massages him, rubs him ALL THIS IN PUBLIC. If we are out at a restaurant or store im always the 3rd wheel Cause she wants to hold him when they walk or rub him in the restaurant while they eat. I always feel like the 3rd wheel.

I've told him how it makes me feel and told him to tell her to back off a little. He hasn't and she doesn't seem to have the common sense to do so.

She is NOT like this with her daughters or her own damn husband.

Taughts/opinions

Its to the point where divorce has been brought up because of this mommy issue